A typical wind turbine extracts 40% of the kinetic energy of the wind that blows through the area swept by the blades. F...
A typical wind turbine extracts 40% of the kinetic energy of the wind that blows through the area swept by the blades. For a large turbine, 110,000 kg of air moves past the blades at 15 m/s every second. If the wind turbine extracts 40% of this kinetic energy, and if 80% of this energy is converted to electric energy, what is the power output of the generator?
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A typical wind turbine extracts 40% of the kinetic energy of the wind that blows through the area swept by the blades. F...
1. A typical wind turbine extracts 40% of the kinetic energy of the wind that blows...
1. A typical wind turbine extracts 40% of the kinetic energy of the wind that blows through the area swept by the blades. For a large turbine 110,000 kg of air moves past the blades at 13 m/s every second. A. Sketch the turbine and the air passing ‘through’ it. B. How much power does the turbine extract? C. If the turbine converts 80% of the power into electric energy, how much electric power is produced?
3. A wind turbine has blades, which sweep out an area of diameter 25 m 25m...
3. A wind turbine has blades, which sweep out an area of diameter 25 m 25m blades Fig. 5.1 (a) The wind is blowing directy towards the wind turbine at a speed of 12 m/s. At this wind speed, 7500 kg of air passes every second through the circular area swept out by the blades. U) Calculate the kinetic energy of the air travelling at 12 m /s, which passes through the circular area in 1 second Kinetic energy. The...
An industrial wind turbine has blades that are 35 m long. On a 20?C day, wind at atmospheric pressure blows with a velocity of 12 m/s
An industrial wind turbine has blades that are 35 m long. On a 20?C day, wind at atmospheric pressure blows with a velocity of 12 m/s , and wind in the turbine wake only has a velocity of 11 m/s .(a) If we assume that all of the kinetic energy lost by the wind is converted to electrical energy by the turbine, then what is the power generated by this turbine? (density is 1.205 kg/m^3)(b) This turbine is rated as...
. A typical commercial wind turbine costs approximately $2 million per MW of installed power and...
. A typical commercial wind turbine costs approximately $2 million per MW of installed power and requires 5.76 TJ per million dollars of energy to manufacture the wind turbine. (a) Calculate the amount of energy that is consumed (i.e. energy invested) in the manufacture ofa 1.5 MW wind turbine, assuming that turbine manufacture requires 5.76 TJ per million dollars spent. (TJ Tera-joules 1012 joules) (b) If the wind turbine has blades that are 40 meters (radius) long and the average...
wind energy question 9 What is the amount of air mass that passes through a wind...
wind energy question 9
What is the amount of air mass that passes through a wind turbine's swept area per minute if the turbine has 45 m long blades and the air flux is 12 kg/(m´s)? O 76,300 kg/min 0 1,458,000 kg/min O 4,580,400 kg/min O 3,014,400 kg/min
2 (b) A blade of a wind turbine can be considered as a thin rod, of...
2 (b) A blade of a wind turbine can be considered as a thin rod, of mass m, length a and cross- sectional area A. (i) Show that the moment of inertia of the blade about an axis passing through its centre of mass and perpendicular to its length is 1 = izma? [8] (ii) By applying the parallel axis theorem or otherwise, deduce the moment of inertia of the blade about an axis passing through one end of the...
Kindly correctly and show steps. Thank you 2. Wind (ρair = 1.225 kg/m3 ) passes through...
Kindly correctly and show steps. Thank you
2. Wind (ρair = 1.225 kg/m3 ) passes through a
turbine in Figure 2 at a constant temperature, whose blades of
length R1 = 30 m sweep out an area A1 seen in Figure 2.
V. P 1.5MW Figure 2: Wind Turbine. 2. (20 points) Wind (Pair1.225passes through a turbine in Figure 2 at a constant temperature, whose blades of length Ri 30 m sweep out an area A seen in Figure 2...
The rotor diameter of the wind turbine rotating at 20 rpm in winds of 30 km/h...
The rotor diameter of the wind turbine rotating at 20 rpm in winds of 30 km/h is 80 m. What is the annual revenue generated by wind turbines if 35% of the kinetic energy of the wind is converted into power, (a) the power generated (kW), (b) wing end speed (km/h) (c) is supplied to the consumer at $0.06 kWh? At this time, the density of the air is 1.225 kg/m3.
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
7.26. The conversion of the kinetic energy of wind to electricity may be an attractive altemative...
7.26. The conversion of the kinetic energy of wind to electricity may be an attractive altemative to the use of fossil fuels. Typically, wind causes the rotor of a turbine to turn, and a generator converts the rotational kinetic energy ofthe rotor into electricity. Power generated by a wind turbine (Ws) can be estimated from the density of the air (p), wind speed (u), and turbine rotor diameter (D) using the following formula лD? 1 W. ти* х п, where...
3. A wind turbine has blades, which sweep out an area of diameter 25 m 25m blades Fig. 5.1 (a) The wind is blowing directy towards the wind turbine at a speed of 12 m/s. At this wind speed, 7500 kg of air passes every second through the circular area swept out by the blades. U) Calculate the kinetic energy of the air travelling at 12 m /s, which passes through the circular area in 1 second Kinetic energy. The...
. A typical commercial wind turbine costs approximately $2 million per MW of installed power and requires 5.76 TJ per million dollars of energy to manufacture the wind turbine. (a) Calculate the amount of energy that is consumed (i.e. energy invested) in the manufacture ofa 1.5 MW wind turbine, assuming that turbine manufacture requires 5.76 TJ per million dollars spent. (TJ Tera-joules 1012 joules) (b) If the wind turbine has blades that are 40 meters (radius) long and the average...
wind energy question 9
What is the amount of air mass that passes through a wind turbine's swept area per minute if the turbine has 45 m long blades and the air flux is 12 kg/(m´s)? O 76,300 kg/min 0 1,458,000 kg/min O 4,580,400 kg/min O 3,014,400 kg/min
2 (b) A blade of a wind turbine can be considered as a thin rod, of mass m, length a and cross- sectional area A. (i) Show that the moment of inertia of the blade about an axis passing through its centre of mass and perpendicular to its length is 1 = izma? [8] (ii) By applying the parallel axis theorem or otherwise, deduce the moment of inertia of the blade about an axis passing through one end of the...
Kindly correctly and show steps. Thank you
2. Wind (ρair = 1.225 kg/m3 ) passes through a
turbine in Figure 2 at a constant temperature, whose blades of
length R1 = 30 m sweep out an area A1 seen in Figure 2.
V. P 1.5MW Figure 2: Wind Turbine. 2. (20 points) Wind (Pair1.225passes through a turbine in Figure 2 at a constant temperature, whose blades of length Ri 30 m sweep out an area A seen in Figure 2...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
7.26. The conversion of the kinetic energy of wind to electricity may be an attractive altemative to the use of fossil fuels. Typically, wind causes the rotor of a turbine to turn, and a generator converts the rotational kinetic energy ofthe rotor into electricity. Power generated by a wind turbine (Ws) can be estimated from the density of the air (p), wind speed (u), and turbine rotor diameter (D) using the following formula лD? 1 W. ти* х п, where...
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